US288892A - Isaac van hagen - Google Patents

Description

(No Mndei.)

I. VAN HAGEN. PRQGESS OF AND APPARATUS FOR MANUFAUTURING STOVE BOARDS. N0. 288,892.

' Patented Nov. 20,1883.

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UNITED STATES PATENT OFFIcE.

ISAAC VAN HAGEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS & IVESTLAKE MANUFACTURING COMPANY, OF SAME PLACE.

PROCESS OF AND APPARATUS FOR MANUFACTURING STOVE-BOARDS.

SPECIFICATION forming part of Letters Patent No. 288,892, dated November 20, 1883,

Application filed March 27, 1883. (N model.)

Improvements in the Process of and Apparatus for Manufacturing Stove Boards or Plat- I forms, of which the following is a specification.

My invention has special reference to that class of stove-boards which are made of crystallized tin 5 andfit consists in a method of producing the same, and in an apparatus preferably used in carrying the said method into effect.

Prior to my invention crystallized tin stoveboards were made in sections of, say, four sheets, and while the act of crystallizing small plates is a simple one, it is a difficult matter to perform the same operation upon sheets large enoughsay thirty-four byfortysix inchesto make a non-sectional board, and this I believe was never done until effected by me.

In the ordinary production of crystallized tin, the first operation {to use a technical expression) is to burn the tin, although in fact the sheet is not or should not be burned at all, but the whole surface should be brought to a semi-melted condition. WVhile in this state, the sheet is either plunged into a body of water, or water is dashed or poured upon it. After the sheet has been burned and the water applied the sheet is to be subjected to 1 area of the sheet, whereby to bring the whole in avoiding by a suitable use of ignitible gas regulating the flame and obtaining a perfect combustion, which latter condition is necessary to prevent the smoking of the sheet. These difficulties I have at length succeeded anddistributing over the entire surface of the sheet to be heated numerous gas-jets, each under equal pressure and uniformly mixed with atmospheric air, so as to produce a number of smokeless flames of equal intensity, all adapted to be simultaneously regmlated and controlled, as hereinafter set forth.

In the further description of my invention which follows, I will refer to the apparatus preferably used for conducting my improved process, and which is shown in the annexed drawings.

Figure l is an isometrical view of the apparatus. "Figs. 2, 3, 4, and 5 are views of do tached details.

Similar letters of reference indicate similar parts in the respective figures.

Fig. 1 shows what is usually termed the burning-frame, although the term melting frame is perhaps more appropriate. The burning-fran1e stands on the floor, supported on legs a. The greater part of the frame is made of gas-pipe. A are side pipes, and B gas-supply pipes. C is the gas-regulator, to which the pipes B are connected. The regulator C receives gas through the pipe c and air through the pipe Z). The air is forced into the regulator from a fan-blower, and is necessary to produce the required heat and a perfect combustion, so as to render the apparatus smokeless. Ordinary city gas or other suitable illuminating or ignitible gas may be used.

D are burning-pipes extending across the frame and connecting with the side pipes, A, at a distance of about three inches apart from center to center. The pipes D are provided with holes spaced about two and three-quarters inches apart on either side of the pipe, as shown in Fig. 3. The holes are drilled at such an angle as will divert the flame from contact with the adjacent pipe, as seen in Fig. 4, and arranged so that a jet from one pipe is not opposed to a jet from another. The jet-holes are about the size of N o. 18 wire.

E E are sheet-iron plates through which the pipes D run. The plates E or equivalent bars or stiffening devices are essential to the apparatus, to prevent the warping or springing of the pipes out of shape by heat. The plates IOO project above the pipes about three-fourths of an inch, which is about the distance that the sheet should be held above the top of the burning-frame. There are about five hundred and twenty jets throughout the entire area of the frame, which, being plentifully and equally supplied and mixed with air, produce an intense yet even heat upon the sheet held over and close to them, the sheet deflecting or turning back the flames upon the pipes.

The regulator O is shown detached in Fig. 2, and receives and mixes the inflowing currents of gas and air. It is necessary that the air must be so regulated as not to extinguish the flame, and by the use of the regulator here shown the full blast from the blower may be turned on and the flame not extinguished.

Heretofore with apparatus for conducting various processes of burning in the arts, regulators for mixing gas and air and controlling the flame have only been applied to individual burners, and not used as herein described viz., one common regulator for a great number of jets distributed over a large area. The regulator consists of a cylinder having a head, 0, at each end. In the lower head, 0, is a gaspipe, 0, passing into the upper end of the cylinder and reaching about three inches above the upper side of the air-pipe c. The intention is to effect a thorough comminglingof the gas with the air and a sufficient pressure of air to force and distribute the mixed gas and air throughout the large surface of pipes, thereby giving the necessary blow-pipe effect to each distinct flame and produce a perfect combustion and smokeless flame at each jet. By extending the gas-supply pipe 0 above the I horizontal air or blast pipe 0, the blast is with a handle. The holder is used in the manipulation of the sheet during its treatment.

I do not'claim, broadly, in the crystallizing of tin-plate the burning of the tin and treatment with water and acids, as this has been done long prior to my invention. Neither do I claim, broadly, a gas-pipe burning-frame, nor a regulator for mixing gas and air for the production of an intense and smokeless flame; but,

Having described my invention, I claim 1. As an improvement in the art of manufacturing crystallized tin plates, the withindescribed process, consisting, first, in igniting a number of 'jets of gas equally mixed with air at a stated pressure, and applying the entire surface of the sheet at the same instant of time to the series of flames produced by said jets, thereby equally reducing the entire surface of the sheet to a semi-melted condition, substantially as set forth, and thereafter treat ing the sheet with water and acids in a wellknown manner.

2. In an apparatus for the manufacture of crystallized tin plates, a regulator provided with gas and air inlet pipes, combined with a system of connected and interiorly-conlmunieating perforate and imperforate pipes, and means for preventing the warping or springing of the pipes by changes of temperature, substantially as set forth.

3. In an apparatus for the manufacture of crystallized tin plates, a regulator provided with gas and air inlet pipes, combined with a system of pipes and suitable supports constituting a burning-frame, certain of the pipes being provided with perforations or apertures set at angles and arranged to direct the flames away from adjacent pipes and to prevent the opposition of the flames, substantially as set forth.

4. In an apparatus for the manufacture of crystallized tin plates, a frame having asystem of burning-pipes, combined with perforated sheet plates th rough which the said system of pipes passes, for strengthening the frame and preventing the warping of the pipes by heat, substantially as set forth.

5. A system of connected and interiorly-com municating perforate and imperforate pipes and suitable stiffeners or supports, together constituting a burning-frame, combined with a regulator having gas and air inlet pipes,the gas-pipe extending within the regulator to a point above the connection of the air-pipe, whereby the air-blast is broken and the air distributed throughout the regulator and mixed with the gas for distribution throughout the burning-frame, substantially as and for the purpose set forth.

In testimony hereof I hereunto set my hand this 17th day of March, 1883.

ISAAC VAN HAGAN.

Witnesses:

FRED. G. WAITE, WM. MANGLER.

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